Bobbin



FIG. 1 is a perspective view of a bobbin showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is another perspective view thereof.

The portions of the Figures shown in broken lines depict environmentalsubject matter, are for illustration only and form no part of theclaimed design.

CLAIM The ornamental design for a bobbin, as shown and described.